Microsoft Reports $10 Billion Quarterly OpenAI-Linked Revenue in Latest Regulatory Filing

Redmond-based tech giant Microsoft revealed in a Wednesday public regulatory filing that it generated $10 billion in total quarterly revenue from its full portfolio of commercial agreements with OpenAI — including pre-negotiated revenue-sharing payouts — for the three-month period ending September 30.

That sum accounts for nearly 11% of Microsoft’s total $92.3 billion top-line revenue for the quarter, underscoring the unprecedented scale of financial interdependence between the two firms, even as they increasingly compete directly to court overlapping enterprise and consumer customer bases. Note that Microsoft’s fiscal calendar begins in July, meaning the quarter ending September 30, 2026, marks the first quarter of its 2027 fiscal year.

For the full 2026 fiscal year, Microsoft’s total revenue tied to OpenAI hit $24.1 billion. If the current quarterly run rate holds steady, the company would pull in $40 billion in annual revenue from all OpenAI-related commercial arrangements going forward.

The filing also notes that outstanding unpaid receivables owed to Microsoft by OpenAI reached $7.2 billion at the end of September, up from $6 billion recorded at the close of June. That outstanding balance reflects pending payments for previously completed transactions, not unbooked additional new revenue for Microsoft.

The company did not disclose a breakdown of how much of its total OpenAI-linked revenue came from revenue-sharing payouts, and how much was generated from usage of Microsoft’s Azure cloud computing services. TechCrunch has reached out to both parties to request additional granularity on the revenue split.

In November 2025, TechCrunch reported via leaked internal documents that Microsoft had already received $865.8 million in net revenue-sharing payments from OpenAI in the first nine months of that calendar year. Per widely circulated details of their early partnership terms, OpenAI previously agreed to share 20% of its total revenue with Microsoft as part of a deal that saw the legacy software giant invest more than $13 billion into the AI startup — a 20% revenue share percentage that neither OpenAI nor Microsoft have ever publicly confirmed.

Under a revised agreement signed in April 2026, OpenAI is still required to continue sharing revenue with Microsoft through 2030, up to a pre-set payout cap, even as the new pact explicitly permits OpenAI to partner with competing cloud infrastructure providers. The two firms first began unwinding their once-exclusive partnership in October 2025, when Microsoft relinquished its exclusive cloud vendor hold on OpenAI to grant the startup more operational flexibility to work with other cloud providers. In exchange for that concession, OpenAI committed to purchasing an additional $250 billion worth of Azure services under the terms of that 2025 October agreement.

Microsoft’s ownership stake in OpenAI has also seen gradual dilution: it dropped from roughly 25% in June to 24% as of the end of September, extending a slow downward trend that began after the pair completed their October 2025 recapitalization, when Microsoft’s stake stood at approximately 27%. Microsoft did not specify in its filing what specific factors caused the most recent round of ownership dilution.